561481674087 has 4 divisors (see below), whose sum is σ = 748642232120. Its totient is φ = 374321116056.

The previous prime is 561481674079. The next prime is 561481674109. The reversal of 561481674087 is 780476184165.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 561481674087 - 2³ = 561481674079 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (561481624087) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 93580279012 + ... + 93580279017.

It is an arithmetic number, because the mean of its divisors is an integer number (187160558030).

Almost surely, 2^561481674087 is an apocalyptic number.

561481674087 is a deficient number, since it is larger than the sum of its proper divisors (187160558033).

561481674087 is a wasteful number, since it uses less digits than its factorization.

561481674087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 187160558032.

The product of its (nonzero) digits is 9031680, while the sum is 57.

The spelling of 561481674087 in words is "five hundred sixty-one billion, four hundred eighty-one million, six hundred seventy-four thousand, eighty-seven".